Which species of Aspergillus is characterized by a granular to wooly texture and may appear yellow or yellow-green?

Aspergillus flavus is well-known for its granular to wooly texture, which can present in shades of yellow to yellow-green. This species is significant not just for its morphology but also because it produces aflatoxins, which are potent carcinogens. Identifying Aspergillus flavus is crucial in clinical and environmental mycology due to its implications in food safety and human health.

In contrast to the other species, Aspergillus fumigatus typically appears blue-green and has a more compact conidial arrangement, while Aspergillus niger is characterized by its black colonies. Aspergillus terreus is distinctive for its tan to brown color and less wooly texture. Consequently, the characteristics of Aspergillus flavus make it the species that aligns with the description provided in the question.